Features: A complete set of most common and frequently-used electronic components Arduino. 37 sensor modules and 1 listing paper in one plastic box. High quality sensor kit.. Including basic components and sensors. Suitable for Raspberry pi. Specifications: Material: Circuit board Suitable for Raspberry pi Package Weight: 390g Package List: 1 x Small passive buzzer module 1 x 2-color LED module 1 x Hit sensor module 1 x Vibration switch module 1 x Photo resistor module 1 x Key switch module 1 x Tilt switch module 1 x 3-color full-color LED SMD module 1 x Infrared emission sensor 1 x 3-color LED module 1 x Mercury open optical module 1 x Yin Yi 2-color LED module 3MM 1 x Active buzzer module 1 x Temperature sensor module 1 x Automatic flashing colorful LED module 1 x Mini magnetic reed modules 1 x Hall magnetic sensor module 1 x Infrared sensor receiver module 1 x Class Bihor magnetic sensor 1 x Magic light cup module 1 x Rotary encoder module 1 x Optical broken module 1 x Detect the heartbeat module 1 x Reed module 1 x Obstacle avoidance sensor module 1 x Hunt sensor module 1 x Microphone sound sensor module 1 x Laser sensor module 1 x 5V relay module 1 x Temperature sensor module 1 x Temperature sensor module 1 x Linear magnetic Hall sensors 1 x Flame sensor module 1 x Sensitive microphone sensor module 1 x Temperature and humidity sensor module 1 x XY-axes joystick module 1 x Metal touch sensor module .